We Are Ophthalmology LTD We Care About Your Health

Over the years, Ophthalmology LTD's name has become associated with the highest quality of comprehensive medical and surgical eye care. Highly trained ophthalmologists David West, Bryan Hammer, Eric Thomas, Dustin Dierks, Ryan Geraets, Michael Eide, Elizabeth Atchison, Elise In’t Veld, and Karen Dickes, as well as experienced optometrists Andrea McCann, Emily Walters, and Tyler Vermeer combine their considerable expertise to give each and every patient the best possible care. Ophthalmology LTD delivers treatment for cataracts, glaucoma, diabetic eye disease, as well as cornea transplants, oculoplastic surgery, retina surgery, vitreoretinal surgery, and pediatric eye care in Sioux Falls.

The Finest Eye Specialists in the Tri-State Area

Ophthalmology LTD brings the finest eye specialists in South Dakota to satellite offices in the tri-state area: Luverne, Pipestone, Worthington and Windom in Minnesota, Rock Valley, Sibley, and Sioux Center in Iowa, as well as Dell Rapids, Madison, Mitchell, and Yankton in South Dakota.


In 1968, Ophthalmology LTD revolutionized eye care by taking a comprehensive approach, bringing patients a full range of vision specialties under one roof. Today, eye care teams across the nation are now mimicking the strategy we have spent more than 50 years perfecting. It is because of this experience and our genuine dedication to our patients that our team is widely considered the finest, most comprehensive group of sub-specialty eye surgeons in the tri-state Siouxland area.

Our Services

Our ophthalmologists have expertise in a wide range of specialties and work as a team to meet your eye care needs.


Not only is cataract treatment the most frequently performed surgery in the United States, it is also one of the most successful. More than 99% of patients who undergo cataract removal rank their vision as significantly improved. Drs. Osmundson, Hammer, Dierks, Eide, In't Veld, and West perform this highly effective procedure.

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Early detection and treatment is the key to preventing vision loss with Glaucoma. More than three million Americans have glaucoma, but only half are actually aware that this "silent thief" is slowly and without warning stealing away their vision, sometimes without any noticeable symptoms. Drs. Osmundson and In't Veld  at Ophthalmology LTD specializes in the diagnosis and treatment of glaucoma.

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Children should have a yearly comprehensive eye exam along with their parents. Many vision problems can be detected early and treated before they become detrimental to a child's development, learning abilities, and every day function. Dr. West of Ophthalmology LTD has 22 years of experience in the evaluation and treatment of children's vision.

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The retina functions much like the film in a camera, and when film is damaged, so is the picture. Our retinal specialists Drs. Geraets, Thomas, and Atchison  offer comprehensive retinal exams and treatment to protect against diseases such as diabetic retinopathy that can damage your retina and vision.

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If a window pane is distorted or marred by imperfections, it is difficult to see out through it clearly. Your cornea is your eye’s window. To keep it clear or to restore it to its proper state, Dr. Eide of Ophthalmology LTD uses his specialty training in corneal diseases to treat dry eye, keratoconus, and other conditions that can cause corneal imperfections.

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When your eyelids, eye sockets, or tear ducts malfunction, or a tumor threatens your vision, Ophthalmology LTD oculoplastic surgeon Dr. Hammer can help. Specializing in procedures that restore clear vision as well as a more youthful appearance, Dr. Hammer treats and manages a wide variety of ocular conditions.

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We are a team of passionate professionals with
caring for patients in South Dakota, Minnesota, & Iowa.

Have a look around, then call, request an appointment online, or come by to learn more about how our team of eye experts can help you and your family.

  • Jeff S.

    The front office staff were thorough.
    The back office staff were very friendly and knowledgeable.
    Dr. Geraets analyzed my issues and gave me many scenarios of what could happen and what to look for.
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  • Kent D.

    I am so glad to have been able to have an appointment and surgery on the same day to fix my retinal detachment. I feel really good to have Dr. Atchison as my doctor.
    I want to also thank the surgical...
    read more

  • Larry M.

    I am very pleased with the Eye Care I receive from Dr Walters. She listened, and is very thorough!

  • Dan G.

    Prompt, thorough, very professional!

  • Megan C.

    Great experience! Definitely made it fun for my son!

  • Brenda S.

    I had a great experience. I got in exactly at my appt time. I had a thorough exam and Dr Garret explained everything in detail. Everybody their was pleasant and I could not have asked for better service. ... read more

  • Tim B.

    I had a consolation for cataract surgery with Dr. Elsie J. In’t Veld and her staff,I was real nervous about the surgery,especially cutting into the eye, but Dr.Elsie and her staff answered all my Questions and explained the procedure And... read more

  • Gary G.

    One morning three weeks ago, I opened my eyes to see the right one not working so well. Imagine looking through the bottom of a small empty Coke bottle in the center of your vision. Dr. Ryan Geraets diagnosed the... read more

  • Dennis &.

    Very thorough exam and explanation of diagnosis.

  • Ronald R.

    Very happy recomend anybody with eye problems

  • Kristina K.

    Top notch care! We were so impressed with the knowledge and professionalism of the entire staff.

  • Cloyce S.

    I have had various visits with ophthalmology Limited and I’ve always found the staff very friendly and helpful. I would recommend ophthalmology Limited to anyone.

  • roger s.

    Dr. McCann is the best. She is very knowledgeable and caring. We are very thankful for her!!

  • Bruce B.

    I am always treated professionally but also feel the personal touch from the doctors and all the staff. They truly care about you as a person.

  • Teresa R.

    Dr Walters is excellent. She’s personable, efficient, skilled and a pleasure to be treated by. The clinic is very professional and efficient.

  • Jay S.

    I have been going to Ophthalmology LTD for8 years and they always treat me well and do a great job checking my eyes with no problems, Dr Andrea McCann does a great job and always remembers me and always has... read more

  • Lemma s.

    The people who work at Opthalmology are all very kind and friendly ,take their job seriously served me in a timely manner , Doctor West is the best eye specialist doctors who cares very much he is my... read more

  • Lloyd P.

    I had an appointment yesterday and was truly impressed with the doctor and her team. I was treated with respect and she was more than glad to answer any questions.

  • kay f.

    Very personal attention given and answer to all of my questions.

  • Miranda R.

    I have always received the best care from Dr. Atchison and all of the nurses. Any questions I have are always answered. They also get me scheduled when possible in my own town so I don't have to travel. An... read more

  • Zainab H.

    The atmosphere is relaxed and soothing . Helpful and friendly staff . Dr. Walters and her staff are professional and caring . I would highly recommend Dr. Walters .

  • Dominique S.

    Quality care and consultation to make sure your eyes are doing great.

  • Crystal C.

    I have been a patient of Dr.Thomas for over five years and have greatly benefited from his expertise and knowledge of macular degeneration as well as his friendly calm and superb technique in the delivery of my eye injections.

  • David D.

    I appreciated the time and care provided by Dr. Hammer and the staff. I usually ask (maybe too many! 😃) questions but Bryan was patient and answered each one thoroughly…much appreciated! Following the exam a papilloma was removed... read more

  • Jana W.

    Went for my first consult and everyone there from the front desk to the nurses to Dr. Dierks we're absolutely amazing. Would highly recommend this facility for your eye care needs!

  • Pat G.


  • Shane B.

    Everyone was friendly from the time I walked in the door until I walked out. I was explained everything in my appointment with easy to understand details. I would definitely recommend.

  • A W.

    Very professional and helpful

  • Mark D.

    Great experience!

  • Otoniel L.

    I like the service. It’s just amazing! Everyone is nice. They treat you the best way and have the best service.

  • Kathy A.

    You can always count on friendly staff. Plus Dr. Hammer is proficient and caring! Thanks to you all.

  • William R.

    Staff was very polite and knowledgeable. The whole team I had made my visit pleasant even though not all my news was good.

  • Rosana R.

    I am very happy with the way I get treated at Opthamology Ltd. My dr is very knowledgeable

  • Mike P.

    They did a wonderful job. Answered any questions I had. I highly recommend.

  • Joe S.

    I recently received care at Ophthalmology LTD, and I was impressed and grateful for all that was done during my time with them. Right off the bat the staff were welcoming and I felt they did a great job walking... read more

  • John R.

    Dr. Dierks was on time, courteous, professional, friendly and interested in my care. j

  • David C.

    Friendly professional timely service along with comfortable environment.

  • Lynn F.

    I am always taken care of by Dr. McCann and staff. They are so friendly and so kind. I would always highly recommend all of them.

  • Mona W.

    Everyone at Ophthalmology Ltd was friendly & professional. All my questions were answered and I was given written information summarizing the details of my upcoming procedure. My husband and I left the clinic feeling confident that we know what... read more

  • Nicholas B.

    Dr. Thomas makes every visit very easy and very reassuring. He’s the best to see for your eye needs

  • Pam S.

    A great place to go! Dr West is super!
    The staff is friendly and helpful.

  • Autrie K.

    Very professional great service

  • Timothy P.

    Dr. Vermeer was very thorough and explained my results in terms I could understand.

  • Monica F.

    The staff at Ophthalmology LTD has taken care of my eyes for over 30 years. The staff are all very caring and have a way of putting you at ease. Thank you for taking good care of me!

  • Marilyn V.

    We have always had a great experience with Ophthalmology LTD ~ Dr. West. He has been seeing our daughter since she was 5 weeks old and now she is 25! He has always treated her with respect!!

  • Janet H.

    Everyone was very professional yet caring! They explained procedures well and answered all my questions.

  • Bonnie C.

    Dr Vermeer was very thorough. He took his time to make sure everything was ok with my eye buckle and retena.

  • Diane C.

    I am always treated with respect and friend-liness. All questions are answered and no one hurries me. I feel that my eyes are having the best care!

  • Steve B.

    Very satisfied with the professionalism of ophthalmology limited. This was the third time I saw a doctor Atchison and she did an amazing job.

  • Greg M.

    Excellent service and care. Very satisfied.